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一节精彩的习题课,能够帮助学生巩固知识,达到查缺补漏、开阔思路和提升思维能力的效果,对教师教学技能的提高和高效人才的培养具有重要的意义.下面以一道习题为例,介绍通过问题引导、挖掘拓展的过程,来阐述这堂习题课的教学设计与反思.题目如图1,ABC和CDE都是等边三角形,且点A、C、E在一条直线上,求证:AD=BE.A E D C B图1%本题主要考查学生对“等边三角形”、“全
A wonderful exercise class can help students to consolidate their knowledge, to find out the effects of missing and filling out ideas, broaden their thinking and improve their thinking ability. It is of great significance to the improvement of teachers’ teaching skills and the training of highly-efficient talents. Take the following exercise as an example. Introduce the process of problem guidance, mining and expansion to illustrate the teaching design and reflection of this problem class. The topic is shown in Figure 1. Both ABC and CDE are equilateral triangles, and points A, C, and E are on a straight line. Proof: AD=BE.AEDCB Figure 1% This question is mainly to examine students on the ”equilateral triangle“, ”full"